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MP3是怎样焊接的？焊出来什么样？需要什么开发环境

2008-01-17 15:59 375 查看
2006-05-03 23:48:29





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0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/myimages/" border=0>0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/closedfold.gif" width=14>　博创科技 嵌入互动－UP-NetARM 及 UP-MP3DIY 技术论坛
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目前论坛总在线 4 人，本主题共有 1 人浏览。其中注册用户 0 人，访客 1 人。　 [关闭详细列表]0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" height=12 src="http://www.up-tech.com/non-cgi/images/refresh.gif" width=40 border=0>
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* 贴子主题： MP3是怎样焊接的？焊出来什么样？需要什么开发环境？0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" alt=保存该页为文件 src="http://www.up-tech.com/non-cgi/images/saveas.gif" width=16 align=absMiddle border=0>
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mp3diy
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" height=16 src="http://www.up-tech.com/non-cgi/images/pips3.gif" border=0>
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经验: 0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" height=8 alt=854 src="http://www.up-tech.com/non-cgi/images/bar5.gif" width=4>
现金: 2495 金币
存款: 没开户
贷款: 没贷款
来自: 保密　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" height=14 alt=China src="http://www.up-tech.com/non-cgi/flags/China.gif" align=absMiddle>
在线: 10 时 02 分 02 秒
总发贴数: 118 篇
注册日期: 2003/11/22
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/mobile.gif" width=16 align=absMiddle>手机订阅0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/dy.gif" width=18 align=absMiddle border=0>短信　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/message.gif" width=16 align=absMiddle border=0>消息　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/profile.gif" width=16 align=absMiddle border=0>查看　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/find.gif" width=16 align=absMiddle border=0>搜索　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/friend.gif" width=16 align=absMiddle border=0>好友　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/email.gif" width=16 align=absMiddle border=0>邮件　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/copy.gif" width=16 align=absMiddle border=0>复制　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/reply.gif" width=16 align=absMiddle border=0>引用　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" alt=回复贴子 src="http://www.up-tech.com/non-cgi/images/replynow.gif" width=16 border=0>回复　第[1]楼
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/icon/jpg.gif" width=16 border=0> 此主题相关图片如下：
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" onmousewheel="return bbimg(this)" style="ZOOM: 70%" alt=按此在新窗口浏览图片 src="http://www.up-tech.com/non-cgi/usr/7/7_9.jpg" width=691 onload="javascript:if(this.width>screen.width-333)this.width=screen.width-333" border=0>

0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/top_l.gif">0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/top.gif">0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/top_r.gif">
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/left.gif">[这个贴子最后由kent在 2004/10/29 02:50pm 第 2 次编辑]

通过十幅图片，说明了上面的电路板和元件最终是如何摇身一变成为MP3的。
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/right.gif">
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/bottom_l.gif">0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/bottom.gif">0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/bottom_r.gif">
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" alt=发贴时间 src="http://www.up-tech.com/non-cgi/images/posttime.gif" width=16 align=absMiddle>2003/11/25 01:32am　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" alt="此 IP 为代理服务器" src="http://www.up-tech.com/non-cgi/images/ip.gif" width=13 align=absMiddle>IP: 已设置保密
mp3diy
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" height=16 src="http://www.up-tech.com/non-cgi/images/pips3.gif" border=0>
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威望: 0
魅力: 0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" height=8 alt=732 src="http://www.up-tech.com/non-cgi/images/bar4.gif" width=9>
经验: 0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" height=8 alt=854 src="http://www.up-tech.com/non-cgi/images/bar5.gif" width=4>
现金: 2495 金币
存款: 没开户
贷款: 没贷款
来自: 保密　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" height=14 alt=China src="http://www.up-tech.com/non-cgi/flags/China.gif" align=absMiddle>
在线: 10 时 02 分 02 秒
总发贴数: 118 篇
注册日期: 2003/11/22
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/mobile.gif" width=16 align=absMiddle>手机订阅0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/dy.gif" width=18 align=absMiddle border=0>短信　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/message.gif" width=16 align=absMiddle border=0>消息　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/profile.gif" width=16 align=absMiddle border=0>查看　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/find.gif" width=16 align=absMiddle border=0>搜索　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/friend.gif" width=16 align=absMiddle border=0>好友　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/email.gif" width=16 align=absMiddle border=0>邮件　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/copy.gif" width=16 align=absMiddle border=0>复制　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/reply.gif" width=16 align=absMiddle border=0>引用　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" alt=回复贴子 src="http://www.up-tech.com/non-cgi/images/replynow.gif" width=16 border=0>回复　第[2]楼
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/icon/jpg.gif" width=16 border=0> 此主题相关图片如下：
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" onmousewheel="return bbimg(this)" style="ZOOM: 80%" alt=按此在新窗口浏览图片 src="http://www.up-tech.com/non-cgi/usr/7/7_9_1.jpg" width=691 onload="javascript:if(this.width>screen.width-333)this.width=screen.width-333" border=0>

0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/top_l.gif">0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/top.gif">0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/top_r.gif">
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/left.gif">[这个贴子最后由mp3diy在 2003/11/25 11:43am 第 1 次编辑]

贴片电阻焊接之焊接四步曲：
第1步 烙铁置于焊盘，至焊盘表面锡层熔化。
第2步 当发现焊盘表面焊盘表面锡层熔化（表面性状会起变化），将焊锡送入焊区。注意不是往烙铁上送。
第3步 锡焊不可过多，至焊盘稍突起后，即先抽走锡焊，这时烙铁保持不动。如图7-9所示。
第4步 较快速向斜上方抽走烙铁，即完成上锡过程。
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/right.gif">
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/bottom_l.gif">0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/bottom.gif">0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/bottom_r.gif">
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" alt=发贴时间 src="http://www.up-tech.com/non-cgi/images/posttime.gif" width=16 align=absMiddle>2003/11/25 01:35am　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" alt="此 IP 为代理服务器" src="http://www.up-tech.com/non-cgi/images/ip.gif" width=13 align=absMiddle>IP: 已设置保密
mp3diy
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" height=16 src="http://www.up-tech.com/non-cgi/images/pips3.gif" border=0>
信息: 0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" alt=该用户目前不在线 src="http://www.up-tech.com/non-cgi/images/offline1.gif" width=15 align=absMiddle>
威望: 0
魅力: 0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" height=8 alt=732 src="http://www.up-tech.com/non-cgi/images/bar4.gif" width=9>
经验: 0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" height=8 alt=854 src="http://www.up-tech.com/non-cgi/images/bar5.gif" width=4>
现金: 2495 金币
存款: 没开户
贷款: 没贷款
来自: 保密　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" height=14 alt=China src="http://www.up-tech.com/non-cgi/flags/China.gif" align=absMiddle>
在线: 10 时 02 分 02 秒
总发贴数: 118 篇
注册日期: 2003/11/22
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/mobile.gif" width=16 align=absMiddle>手机订阅0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/dy.gif" width=18 align=absMiddle border=0>短信　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/message.gif" width=16 align=absMiddle border=0>消息　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/profile.gif" width=16 align=absMiddle border=0>查看　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/find.gif" width=16 align=absMiddle border=0>搜索　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/friend.gif" width=16 align=absMiddle border=0>好友　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/email.gif" width=16 align=absMiddle border=0>邮件　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/copy.gif" width=16 align=absMiddle border=0>复制　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/reply.gif" width=16 align=absMiddle border=0>引用　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" alt=回复贴子 src="http://www.up-tech.com/non-cgi/images/replynow.gif" width=16 border=0>回复　第[3]楼
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/icon/jpg.gif" width=16 border=0> 此主题相关图片如下：
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" onmousewheel="return bbimg(this)" style="ZOOM: 50%" alt=按此在新窗口浏览图片 src="http://www.up-tech.com/non-cgi/usr/7/7_9_2.jpg" width=691 onload="javascript:if(this.width>screen.width-333)this.width=screen.width-333" border=0>

0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/top_l.gif">0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/top.gif">0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/top_r.gif">
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/left.gif">[这个贴子最后由mp3diy在 2003/11/25 11:44am 第 1 次编辑]

焊盘为过孔的元件和DIP封装的芯片的焊接方法：
这类焊接的共同特点是元件有长长的管脚，需要插到电路板的孔里，然后将其焊接到过孔焊盘上，如果管脚过长，还需要在焊接结束后将多余的管腿剪掉。这种焊接方式是最简单的，只要先焊好一个管脚，再调整元件的位置，最后依次焊完剩下的管脚即可。一次焊不成功，也可清理后再次重焊。

0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/right.gif">
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/bottom_l.gif">0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/bottom.gif">0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/bottom_r.gif">
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" alt=发贴时间 src="http://www.up-tech.com/non-cgi/images/posttime.gif" width=16 align=absMiddle>2003/11/25 01:36am　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" alt="此 IP 为代理服务器" src="http://www.up-tech.com/non-cgi/images/ip.gif" width=13 align=absMiddle>IP: 已设置保密
mp3diy
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" height=16 src="http://www.up-tech.com/non-cgi/images/pips3.gif" border=0>
信息: 0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" alt=该用户目前不在线 src="http://www.up-tech.com/non-cgi/images/offline1.gif" width=15 align=absMiddle>
威望: 0
魅力: 0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" height=8 alt=732 src="http://www.up-tech.com/non-cgi/images/bar4.gif" width=9>
经验: 0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" height=8 alt=854 src="http://www.up-tech.com/non-cgi/images/bar5.gif" width=4>
现金: 2495 金币
存款: 没开户
贷款: 没贷款
来自: 保密　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" height=14 alt=China src="http://www.up-tech.com/non-cgi/flags/China.gif" align=absMiddle>
在线: 10 时 02 分 02 秒
总发贴数: 118 篇
注册日期: 2003/11/22
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/mobile.gif" width=16 align=absMiddle>手机订阅0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/dy.gif" width=18 align=absMiddle border=0>短信　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/message.gif" width=16 align=absMiddle border=0>消息　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/profile.gif" width=16 align=absMiddle border=0>查看　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/find.gif" width=16 align=absMiddle border=0>搜索　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/friend.gif" width=16 align=absMiddle border=0>好友　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/email.gif" width=16 align=absMiddle border=0>邮件　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/copy.gif" width=16 align=absMiddle border=0>复制　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/reply.gif" width=16 align=absMiddle border=0>引用　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" alt=回复贴子 src="http://www.up-tech.com/non-cgi/images/replynow.gif" width=16 border=0>回复　第[4]楼
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/icon/jpg.gif" width=16 border=0> 此主题相关图片如下：
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" onmousewheel="return bbimg(this)" alt=按此在新窗口浏览图片 src="http://www.up-tech.com/non-cgi/usr/7/7_9_3.jpg" width=691 onload="javascript:if(this.width>screen.width-333)this.width=screen.width-333" border=0>

0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/top_l.gif">0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/top.gif">0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/top_r.gif">
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/left.gif">[这个贴子最后由mp3diy在 2003/11/25 11:44am 第 1 次编辑]

电源转换芯片用来将USB口的5V电源转换成芯片工作所需要的3.3V电压。
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/right.gif">
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/bottom_l.gif">0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/bottom.gif">0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/bottom_r.gif">
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" alt=发贴时间 src="http://www.up-tech.com/non-cgi/images/posttime.gif" width=16 align=absMiddle>2003/11/25 01:37am　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" alt="此 IP 为代理服务器" src="http://www.up-tech.com/non-cgi/images/ip.gif" width=13 align=absMiddle>IP: 已设置保密
mp3diy
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" height=16 src="http://www.up-tech.com/non-cgi/images/pips3.gif" border=0>
信息: 0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" alt=该用户目前不在线 src="http://www.up-tech.com/non-cgi/images/offline1.gif" width=15 align=absMiddle>
威望: 0
魅力: 0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" height=8 alt=732 src="http://www.up-tech.com/non-cgi/images/bar4.gif" width=9>
经验: 0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" height=8 alt=854 src="http://www.up-tech.com/non-cgi/images/bar5.gif" width=4>
现金: 2495 金币
存款: 没开户
贷款: 没贷款
来自: 保密　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" height=14 alt=China src="http://www.up-tech.com/non-cgi/flags/China.gif" align=absMiddle>
在线: 10 时 02 分 02 秒
总发贴数: 118 篇
注册日期: 2003/11/22
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/mobile.gif" width=16 align=absMiddle>手机订阅0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/dy.gif" width=18 align=absMiddle border=0>短信　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/message.gif" width=16 align=absMiddle border=0>消息　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/profile.gif" width=16 align=absMiddle border=0>查看　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/find.gif" width=16 align=absMiddle border=0>搜索　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/friend.gif" width=16 align=absMiddle border=0>好友　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/email.gif" width=16 align=absMiddle border=0>邮件　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/copy.gif" width=16 align=absMiddle border=0>复制　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/reply.gif" width=16 align=absMiddle border=0>引用　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" alt=回复贴子 src="http://www.up-tech.com/non-cgi/images/replynow.gif" width=16 border=0>回复　第[5]楼
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/icon/jpg.gif" width=16 border=0> 此主题相关图片如下：
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" onmousewheel="return bbimg(this)" alt=按此在新窗口浏览图片 src="http://www.up-tech.com/non-cgi/usr/7/7_9_4.jpg" width=691 onload="javascript:if(this.width>screen.width-333)this.width=screen.width-333" border=0>

0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/top_l.gif">0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/top.gif">0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/top_r.gif">
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/left.gif">[这个贴子最后由mp3diy在 2003/11/25 11:44am 第 1 次编辑]

贴片元件的焊接需要注意。首先，以正确的方向将芯片与焊盘四边对齐，准备芯片在焊盘上的定位。用手小心移动芯片，使其在四个方向上芯片引脚都和焊盘比较好地对应。芯片上的点表示第一脚的位置，同时电路板上焊盘的第一脚位置也有一个小白点。
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/right.gif">
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/bottom_l.gif">0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/bottom.gif">0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/bottom_r.gif">
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" alt=发贴时间 src="http://www.up-tech.com/non-cgi/images/posttime.gif" width=16 align=absMiddle>2003/11/25 01:38am　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" alt="此 IP 为代理服务器" src="http://www.up-tech.com/non-cgi/images/ip.gif" width=13 align=absMiddle>IP: 已设置保密
mp3diy
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" height=16 src="http://www.up-tech.com/non-cgi/images/pips3.gif" border=0>
信息: 0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" alt=该用户目前不在线 src="http://www.up-tech.com/non-cgi/images/offline1.gif" width=15 align=absMiddle>
威望: 0
魅力: 0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" height=8 alt=732 src="http://www.up-tech.com/non-cgi/images/bar4.gif" width=9>
经验: 0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" height=8 alt=854 src="http://www.up-tech.com/non-cgi/images/bar5.gif" width=4>
现金: 2495 金币
存款: 没开户
贷款: 没贷款
来自: 保密　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" height=14 alt=China src="http://www.up-tech.com/non-cgi/flags/China.gif" align=absMiddle>
在线: 10 时 02 分 02 秒
总发贴数: 118 篇
注册日期: 2003/11/22
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/mobile.gif" width=16 align=absMiddle>手机订阅0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/dy.gif" width=18 align=absMiddle border=0>短信　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/message.gif" width=16 align=absMiddle border=0>消息　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/profile.gif" width=16 align=absMiddle border=0>查看　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/find.gif" width=16 align=absMiddle border=0>搜索　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/friend.gif" width=16 align=absMiddle border=0>好友　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/email.gif" width=16 align=absMiddle border=0>邮件　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/copy.gif" width=16 align=absMiddle border=0>复制　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/reply.gif" width=16 align=absMiddle border=0>引用　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" alt=回复贴子 src="http://www.up-tech.com/non-cgi/images/replynow.gif" width=16 border=0>回复　第[6]楼
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/icon/jpg.gif" width=16 border=0> 此主题相关图片如下：
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" onmousewheel="return bbimg(this)" style="ZOOM: 100%" alt=按此在新窗口浏览图片 src="http://www.up-tech.com/non-cgi/usr/7/7_9_5.jpg" width=691 onload="javascript:if(this.width>screen.width-333)this.width=screen.width-333" border=0>

0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/top_l.gif">0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/top.gif">0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/top_r.gif">
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/left.gif">[这个贴子最后由mp3diy在 2003/11/25 11:45am 第 1 次编辑]

接下来，用烙铁粘上一点焊锡，先各在四个边上轻轻点一下，使芯片先在电路板上固定住。
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/right.gif">
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/bottom_l.gif">0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/bottom.gif">0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/bottom_r.gif">
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" alt=发贴时间 src="http://www.up-tech.com/non-cgi/images/posttime.gif" width=16 align=absMiddle>2003/11/25 01:39am　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" alt="此 IP 为代理服务器" src="http://www.up-tech.com/non-cgi/images/ip.gif" width=13 align=absMiddle>IP: 已设置保密
mp3diy
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" height=16 src="http://www.up-tech.com/non-cgi/images/pips3.gif" border=0>
信息: 0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" alt=该用户目前不在线 src="http://www.up-tech.com/non-cgi/images/offline1.gif" width=15 align=absMiddle>
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经验: 0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" height=8 alt=854 src="http://www.up-tech.com/non-cgi/images/bar5.gif" width=4>
现金: 2495 金币
存款: 没开户
贷款: 没贷款
来自: 保密　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" height=14 alt=China src="http://www.up-tech.com/non-cgi/flags/China.gif" align=absMiddle>
在线: 10 时 02 分 02 秒
总发贴数: 118 篇
注册日期: 2003/11/22
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/mobile.gif" width=16 align=absMiddle>手机订阅0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/dy.gif" width=18 align=absMiddle border=0>短信　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/message.gif" width=16 align=absMiddle border=0>消息　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/profile.gif" width=16 align=absMiddle border=0>查看　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/find.gif" width=16 align=absMiddle border=0>搜索　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/friend.gif" width=16 align=absMiddle border=0>好友　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/email.gif" width=16 align=absMiddle border=0>邮件　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/copy.gif" width=16 align=absMiddle border=0>复制　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/reply.gif" width=16 align=absMiddle border=0>引用　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" alt=回复贴子 src="http://www.up-tech.com/non-cgi/images/replynow.gif" width=16 border=0>回复　第[7]楼
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/icon/jpg.gif" width=16 border=0> 此主题相关图片如下：
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" onmousewheel="return bbimg(this)" style="ZOOM: 90%" alt=按此在新窗口浏览图片 src="http://www.up-tech.com/non-cgi/usr/7/7_9_6.jpg" width=691 onload="javascript:if(this.width>screen.width-333)this.width=screen.width-333" border=0>

0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/top_l.gif">0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/top.gif">0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/top_r.gif">
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/left.gif">[这个贴子最后由mp3diy在 2003/11/25 11:45am 第 1 次编辑]

接下来开始焊接芯片管脚。由于AT89C51SND1芯片的管脚细而密，因此，不能用前面所介绍的四步曲来焊接了，而是采用新的方法。
先在芯片一个边的管脚一头熔入一些焊锡，形成大约为做熟的大米粒那么大的一团锡附着在芯片管脚上，这个过程是将芯片牢牢固定在焊盘上。
接下来，先将烙铁放在“锡米粒”将其熔化，待熔化后，用烙铁将锡沿着芯片的边往另外一个方向刮，注意刮的时候一定要在锡充分熔化的情况下进行，否则，容易使引脚变形，甚至损坏。
如果烙铁的状态比较好，在刮的过程中，焊锡会沿着芯片边向其他管脚 “传递”，所经之处，引脚和焊盘即被牢牢焊接在一起，而且表面光亮、均匀。

0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/right.gif">
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/bottom_l.gif">0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/bottom.gif">0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/bottom_r.gif">
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" alt=发贴时间 src="http://www.up-tech.com/non-cgi/images/posttime.gif" width=16 align=absMiddle>2003/11/25 01:41am　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" alt="此 IP 为代理服务器" src="http://www.up-tech.com/non-cgi/images/ip.gif" width=13 align=absMiddle>IP: 已设置保密
mp3diy
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" height=16 src="http://www.up-tech.com/non-cgi/images/pips3.gif" border=0>
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威望: 0
魅力: 0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" height=8 alt=732 src="http://www.up-tech.com/non-cgi/images/bar4.gif" width=9>
经验: 0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" height=8 alt=854 src="http://www.up-tech.com/non-cgi/images/bar5.gif" width=4>
现金: 2495 金币
存款: 没开户
贷款: 没贷款
来自: 保密　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" height=14 alt=China src="http://www.up-tech.com/non-cgi/flags/China.gif" align=absMiddle>
在线: 10 时 02 分 02 秒
总发贴数: 118 篇
注册日期: 2003/11/22
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/mobile.gif" width=16 align=absMiddle>手机订阅0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/dy.gif" width=18 align=absMiddle border=0>短信　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/message.gif" width=16 align=absMiddle border=0>消息　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/profile.gif" width=16 align=absMiddle border=0>查看　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/find.gif" width=16 align=absMiddle border=0>搜索　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/friend.gif" width=16 align=absMiddle border=0>好友　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/email.gif" width=16 align=absMiddle border=0>邮件　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/copy.gif" width=16 align=absMiddle border=0>复制　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/reply.gif" width=16 align=absMiddle border=0>引用　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" alt=回复贴子 src="http://www.up-tech.com/non-cgi/images/replynow.gif" width=16 border=0>回复　第[8]楼
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/icon/jpg.gif" width=16 border=0> 此主题相关图片如下：
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" onmousewheel="return bbimg(this)" style="ZOOM: 80%" alt=按此在新窗口浏览图片 src="http://www.up-tech.com/non-cgi/usr/7/7_9_7.jpg" width=691 onload="javascript:if(this.width>screen.width-333)this.width=screen.width-333" border=0>

0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/top_l.gif">0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/top.gif">0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/top_r.gif">
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/left.gif">[这个贴子最后由mp3diy在 2003/11/25 11:45am 第 1 次编辑]

如果不能一挥而就，将焊锡从头一至刮到尾，形成靓丽的焊接表面，就需要进行单独清理。对于某个仍然粘在一起的管脚（一般是两个或三个管脚零星地粘接在一起），尝试用烙铁向芯片四周方向刮，这时，焊锡就可能粘到了烙铁上，然后把烙铁上的锡用力甩掉。对于实在无法分离的引脚，可以用镊子放一小块松香在这些引脚上，然后用烙铁加热后清理，通常，使用松香很轻易就可以将粘在一起的引脚分开。
最后由于大量使用松香，可能会导致电路板表面比较脏，为了使焊盘更加美观，同时防止松香对电路板的腐蚀，要用棉球蘸清洗剂对电路板进行擦洗。

0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/right.gif">
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/bottom_l.gif">0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/bottom.gif">0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/bottom_r.gif">
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" alt=发贴时间 src="http://www.up-tech.com/non-cgi/images/posttime.gif" width=16 align=absMiddle>2003/11/25 01:45am　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" alt="此 IP 为代理服务器" src="http://www.up-tech.com/non-cgi/images/ip.gif" width=13 align=absMiddle>IP: 已设置保密
mp3diy
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" height=16 src="http://www.up-tech.com/non-cgi/images/pips3.gif" border=0>
信息: 0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" alt=该用户目前不在线 src="http://www.up-tech.com/non-cgi/images/offline1.gif" width=15 align=absMiddle>
威望: 0
魅力: 0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" height=8 alt=732 src="http://www.up-tech.com/non-cgi/images/bar4.gif" width=9>
经验: 0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" height=8 alt=854 src="http://www.up-tech.com/non-cgi/images/bar5.gif" width=4>
现金: 2495 金币
存款: 没开户
贷款: 没贷款
来自: 保密　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" height=14 alt=China src="http://www.up-tech.com/non-cgi/flags/China.gif" align=absMiddle>
在线: 10 时 02 分 02 秒
总发贴数: 118 篇
注册日期: 2003/11/22
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/mobile.gif" width=16 align=absMiddle>手机订阅0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/dy.gif" width=18 align=absMiddle border=0>短信　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/message.gif" width=16 align=absMiddle border=0>消息　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/profile.gif" width=16 align=absMiddle border=0>查看　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/find.gif" width=16 align=absMiddle border=0>搜索　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/friend.gif" width=16 align=absMiddle border=0>好友　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/email.gif" width=16 align=absMiddle border=0>邮件　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/copy.gif" width=16 align=absMiddle border=0>复制　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/reply.gif" width=16 align=absMiddle border=0>引用　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" alt=回复贴子 src="http://www.up-tech.com/non-cgi/images/replynow.gif" width=16 border=0>回复　第[9]楼
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/icon/jpg.gif" width=16 border=0> 此主题相关图片如下：
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" onmousewheel="return bbimg(this)" style="ZOOM: 70%" alt=按此在新窗口浏览图片 src="http://www.up-tech.com/non-cgi/usr/7/7_9_8.jpg" width=691 onload="javascript:if(this.width>screen.width-333)this.width=screen.width-333" border=0>

0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/top_l.gif">0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/top.gif">0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/top_r.gif">
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/left.gif">[这个贴子最后由mp3diy在 2003/11/25 11:46am 第 1 次编辑]

这就完成了AT89C51SND1C芯片的焊接。还凑和吧：）
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/right.gif">
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/bottom_l.gif">0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/bottom.gif">0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/bottom_r.gif">
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" alt=发贴时间 src="http://www.up-tech.com/non-cgi/images/posttime.gif" width=16 align=absMiddle>2003/11/25 01:46am　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" alt="此 IP 为代理服务器" src="http://www.up-tech.com/non-cgi/images/ip.gif" width=13 align=absMiddle>IP: 已设置保密
mp3diy
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" height=16 src="http://www.up-tech.com/non-cgi/images/pips3.gif" border=0>
信息: 0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" alt=该用户目前不在线 src="http://www.up-tech.com/non-cgi/images/offline1.gif" width=15 align=absMiddle>
威望: 0
魅力: 0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" height=8 alt=732 src="http://www.up-tech.com/non-cgi/images/bar4.gif" width=9>
经验: 0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" height=8 alt=854 src="http://www.up-tech.com/non-cgi/images/bar5.gif" width=4>
现金: 2495 金币
存款: 没开户
贷款: 没贷款
来自: 保密　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" height=14 alt=China src="http://www.up-tech.com/non-cgi/flags/China.gif" align=absMiddle>
在线: 10 时 02 分 02 秒
总发贴数: 118 篇
注册日期: 2003/11/22
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/mobile.gif" width=16 align=absMiddle>手机订阅0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/dy.gif" width=18 align=absMiddle border=0>短信　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/message.gif" width=16 align=absMiddle border=0>消息　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/profile.gif" width=16 align=absMiddle border=0>查看　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/find.gif" width=16 align=absMiddle border=0>搜索　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/friend.gif" width=16 align=absMiddle border=0>好友　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/email.gif" width=16 align=absMiddle border=0>邮件　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/copy.gif" width=16 align=absMiddle border=0>复制　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/reply.gif" width=16 align=absMiddle border=0>引用　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" alt=回复贴子 src="http://www.up-tech.com/non-cgi/images/replynow.gif" width=16 border=0>回复　第[10]楼
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/icon/jpg.gif" width=16 border=0> 此主题相关图片如下：
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" onmousewheel="return bbimg(this)" style="ZOOM: 70%" alt=按此在新窗口浏览图片 src="http://www.up-tech.com/non-cgi/usr/7/7_9_9.jpg" width=691 onload="javascript:if(this.width>screen.width-333)this.width=screen.width-333" border=0>

0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/top_l.gif">0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/top.gif">0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/top_r.gif">
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/left.gif">[这个贴子最后由mp3diy在 2003/11/25 11:46am 第 1 次编辑]

接下来焊接晶体等最小系统的外围电路。
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/right.gif">
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/bottom_l.gif">0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/bottom.gif">0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/table/bottom_r.gif">
0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" alt=发贴时间 src="http://www.up-tech.com/non-cgi/images/posttime.gif" width=16 align=absMiddle>2003/11/25 01:48am　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" alt="此 IP 为代理服务器" src="http://www.up-tech.com/non-cgi/images/ip.gif" width=13 align=absMiddle>IP: 已设置保密
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快速回复主题:MP3是怎样焊接的？焊出来什么样？需要什么开发环境？　　0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}" src="http://www.up-tech.com/non-cgi/images/mobile.gif" width=16>手机订阅主题
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本论坛言论纯属发表者个人意见，与 博创科技 嵌入互动－UP-NetARM 及 UP-MP3DIY 技术论坛 立场无关
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